Jacob e



(No Model.)

J.B.BCKBRT. BALANCE WHEEL PLIERS AND GALIPERS. No. 481,936.

Patented Sept. 6, 1892.

Nr'rsn Sterns risica.

Aralar BALANCE-WHEEL PLIERS AND CALIPERS.

SPECIFICATION forming part of Letters Patent No. 481,936, datedSeptember 6, 1892.

Application tiled April '7, 1892. Serial No. 428,176. (No model.)

To a/ZZ whom, it may concern:

Be it known that I, JACOB E. ECKERT, a citizen of the United States,residing at Marengo, in the county of Iowa and State of Iowa, haveinvented a new and useful Oombined Calipers and Pliers, of which thefollowing is a specification.

This invention relates to an improved tool for the use of watchmakers,which comprises a combined calipers and balance-wheel truing-pliers, aswill be more fully hereinafter described and claimed.

The object of the invention is to provide convenient and practicalcombination implements of this character for holding a balancewheelloosely or with slight friction on its pivots while truing or trainingthe wheel, said tools being also adapt-ed to be quickly changed, so asto grasp the arm of the wheel firmly, in order t0 bend the arms and truethe wheel entire for use in a watch.

In the drawings, Figure l is a perspective View of the improvedimplement. Fig. 2 is a longitudinal vertical section of the same. Fig. 3is a transverse vertical section on the line a: x, Fig. l, on anenlarged scale.

Similar numerals of reference indicate corresponding parts in theseveral views.

Referring to the drawings, the numeral l designates the handles, whichhave their forward ends bifurcated to form arms 2, a portion of whichare recessed, as at 3, to receive the other arm and are pivotallyconnected at this point. To the front portion of the said arms 2 andextending between the same rearward are the jaws 4, whose front ends arebowed and have inwardIy-projecting hollow posts 5, with centers 6 in theends thereof. Within said posts 5 are removably mounted brass punches 7,which are held in position by spring-arms S, pivotally connected to therear portions of the jaws and having their front ends bent or arched, asat 9, to take over the projecting ends of the said punches. The rearends of the jaws 4 move in the bifurcations of the arms 2 and are heldin position therein by the pivots passing through the forward ends ofsaid arms 2 and through the rearmost portions of the jaws 4. A gagescrew10 extends through the jaws 4 and regulates the adjustment of the post 5for various purposes, and through the medium of said gage-screw thedegree of movement of the posts 5 to and from each other may be readilycontrolled and adapt the device for use in connection with differentlengths of staffs and pinions and to keep the wheel from dropping outwhen opening the calipers for the purpose of trying the wheel toascertain if it is true after bending. By the construction set 6o forthloose joints are wholly avoided and the brass punches are provided withsufficient play in the posts, in order that if the calipers should givea little in bending the wheel or if any of the joints should happen tobecome loose there will be no danger of breaking or bending the pivots.

In this device it is not necessary to remove the wheel from thecalipers, but merely squeezing shut the handles with the left 7o hand,thereby clamping the female steel centers in the posts 5 on the heavyparts of the staff or pinion,as the case may be, letting the pivots gothrough the female steel centers and rest in the centers of the brasspunches. The said centers are supported in the posts 5 by friction,being driven thereinto, as well known in the art.

The punches can be changed, if desired, to iit certain odd parts, suchas the long pivot on the third wheel for the seconds-hand.

On the side of one of the jaws is a slotted gage ll, which is movableand adjustable in the range of work, and it is well understood by thoseskilled in the art.

Having thus described the invention, what is claimed as new is l. In atool of the character described, the combination of the jaws, handles towhich said jaws are pivoted and having a loose connection with the rearportions of said jaws, so that the latter can have a sliding movement attheir rear ends in said handles, and a gagescrew extending through thesaid jaws inierf mediate of the rear ends and the pivotal pointsthereof, substantially as described.

2. In a tool of the character described, the combination of jaws looselyconnected at their rear ends to have a sliding movement and havinginwardly-extending posts with centers fixed to the ends thereof andbrass punches movably mounted in said posts, substantially as described.

3. In a tool of the character described, the

combination of jaws loosely connected at their pivotally connected tothe front ends of said rear ends to have a sliding movement and arms andhaving their rear ends moving in having,r hollow posts extending inwardfrom and through said bifurcated portions ot the 15 the ends thereof,brass punches mounted in said posts, and spring-arms secured to saidjaws and bearing` on the ends of said punches to hold the same inposition, substantially as described.

4. In a tool of the character described, the combination of the handleswith their front portions bifureated to form arms whiehreeeive and arepivoted to each other and jaws handles, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JACOB E. ECKER'I. XVitnesses:

J. B. MURPHY, M. A. SIMMONS.

